Why You’ll Love It Twin Mattress and Full Mattress Bundle: Combine our premium mattresses in a bundle for twin over full bunk beds or for different beds for siblings. Includes 1 twin and 1 full memory foam mattress. Pressure Relief Low-Profile Mattress: Comfort Cushion Memory Foam and Comfort Support layers cradle and support with a plush yet firm feel. Superior Support: High-density Hero Layer and Dynamic Support Base foam reduces pressure points while providing the ideal balance of comfort and support and with our 14-slat Maxtrix twin beds, there is no need for a Bunkie Board or box spring. Cool and Deep Sleep: Perforated memory foam and breathable organic cotton mattress cover increase airflow to provide cool temperatures for restful sleep. High-Quality Safe Materials: CertiPUR-US® certified, hypoallergenic mattress is constructed from clean, low-VOC materials. Cotton blend mattress liner has a safe, fire-retardant design without the use of fiberglass or chemicals. Organic Cotton Mattress Cover: Breathable mattress covers are made from organic cotton; Mattress covers are easy to remove and will protect your mattress for years to come. Machine washable for a fresh and clean sleep every wash. Perfect Pairing with Bunk Beds and Loft Beds: These mattresses take full advantage of our industry-leading guardrail’s height with 11 inches of security. These twin-size and full-size mattresses’ low height allow more headroom between bunks and ceilings, reducing bumped heads with more space to sit up. Best Kids’ Twin Mattress: Medium-firm mattress is specifically designed for spinal alignment and distributes weight evenly. Our 4-layer design provides maximum comfort while ensuring their growing bodies get the support they need. Dimensions: Twin-size mattress measures 75” L x 39” W x 5”; Full-size mattress measures 74” L x 54” W x 5” H This mattress ships straight to your door compressed in a compact box for easy setup. We recommend letting the mattress air out and reshape for 24 hours. Maxtrix mattresses are made to perfectly fit Maxtrix bunks, lofts, beds, and trundles.